Why bridge decks need an anti-slip surface
Services: Bridge Deck Waterproofing & Anti Skid Applications
Bridges are a critical part of infrastructure across the globe, creating a passage for road users and pedestrians across water, roads and railways. An anti-slip surface plays a crucial role in maintaining the overall safety, functionality and longevity of these structures.
Safety – Skid resistance is drastically reduced during wet weather conditions, due to the water film covering the surfacing acting as a lubricant and reducing the friction between the tyre and pavement. An anti-slip surface enhances safety for both vehicles and pedestrians, particularly during wet or icy weather, by enhancing the characteristic skid coefficient.
Wear and tear -Vehicular traffic will wear down the surface of a bridge deck over time, which in turn creates a smoother surface that is more prone to cause skidding. Anti slip surfacing is designed to maintain its traction properties over long periods of time, minimising maintenance costs.
Structural longevity – The steel or concrete structure of the bridge can be subject to damage and degradation from heavy use and environmental impacts, such as freeze thaw cycles. Anti slip surfacing helps to protect the underlying bridge deck material.
Regulatory compliance – While there are no legal requirements for skid resistance in the UK, Local authorities have a duty under the Highways Act 1980 to maintain a highway in a condition that is safe and fit for purpose. Therefore, most authorities have a skid resistance strategy in place, where the skid resistance is measured against a pre-determined limit and any road surfaces equal to or less than the limit will require further investigation and remedial action.
Anti-slip bridge surfaces provide a low-cost, low maintenance solution for drastically improving the friction and lifespan on a bridge.